Bunsen burner.



PATENTED NOV. 3, 1903.

A. HQ HUMPHREY. BUNSEN BURNER.

APPLICATION FILED JAN. 1o, 190s.

NO.MODEL.

1;. Tiff Witlgesses:

lgvergtorl,

* UNITED i LS:iii'Zilrjs Patented November 3, 1903.

ALFRED H. HUMPHREY, OF KALAMAZOO, MICHIGAN.

BUNSEN BURNER.

SPECIFICATION forming part of Letters Patent NO. 742,990, dated November3, 1903.

Application filed January 10. 1903. Serial No. 138,489. (No model.)

ci-ty of Kalamazoo, in the county of Kalamazoo and State of Michigan,have invented certain new and useful Improvements in Bunsen second, toprovide an improved ready means Burners, of which the following/.is aspecification.

This invention relates to improvements in Bu'nsen burners, andparticularly to improvements in a needle gas-supply valve for a Bunsenburner.

The objects'of the invention are, first, to provide an improvedconstruction of needlevalve in which the needle-point is so evenlysupported and adjusted that there is an even delivery of the jet of gasaround the point;

for supporting and guiding the needle of such a needle-valve; third, toprovide an improved means of adjusting the needle of such aneedle-valve.

Further objects relating to details of construction will definitelyappear in the detailed description to follow.

I accomplish the objects of my invention by the devices and meansdescribed in the following specification.

The invention is clearly defined, and pointed out in the claims.

A structure embodying the features of my invention is fully illustratedin the accompanying drawings, forming a part of this specification, inwhich- Figure 1 is a detail sectional view of my improved needle-valvefor Bunsen burners, taken on a line corresponding to the irregular line1 1 of Fig. 3. Fig. 2 is a vertical detail sectional view online 2 2 ofFig. 1, showing the rack on the side of the needle and the pinion bywhich itis actuated. Fig. 3 is a horizontal sectional view taken on line3 3 of Fig. 1, showing the perforated diaphragm which supports andguides the needle in position andthe relation of the adjusting means.

In the drawings similar letters of reference refer to similar partsthroughout the several views and the sectional views are taken lookingin the direction of the little arrows at the ends of the section-lines.

Referring to the lettered parts of the drawings, the'gas-pipe Aisprovided with a burnerbase B, screwed thereon in the usual way,

and this terminates in the needle-valve seat.

at its upper end. The needle D is preferably supported in the centralposition by diaphragms or horizontal .partitions e, which are suitablyperforated for the free passage of the gas to the needlevalve above. Theneedle D is in a central aperture in these diaphragms e. Thesediaphragins are supported in position by friction, they being crowdedclosely'into the burner-base B.. Ou one side of the needle D is formed arack D. A transverse sleeve E is inserted into the side of theburner-base B, making an opening into the same between the diaphragrns ee.

thumb-screw E is screw-threaded into this sleeve, and the inner end ot'this thumb-screw E is formed into an elongated small pinion E', whichmeshes with the rack D' of the needle D. The point of the needle fitsinto a usual valve-seat provided for needle-valves. The threads of thethu mb-screw E fit snugly and make a gastight connection, and as thepinion engages the rack the needle is prevented from rotation and ismoved up and down very speedily by the manipulation of i" thethumb-screw, s0 that to turn up or-to turn down the gas requires thesame manipu lation as in an ordinary kerosene-lamp. It is very importantto be able to readily adjust the flow of gas in a Bunsen burner,particularly where incandescent mantles are used, as it needs a speedyregulation of the burner to secure the greatest eiiciency for the gasconsumed by regulating exactly the mixture of the gas with the air inthe burner so as to secure the very best proportions. This device isused with the improved burnertube C, which is slightly tapered upwardlywith an abrupt expansion at the top, though it is well adapted for usewith any kind of mixing-tube that may be used with a Bunsen` burner.

While I have shown my improved needlevalve for-Bumsen burnersillustrated in the exact form in which I am now manufacturing it, whichI consider possesses merit over any other owing to the superior guidingof the needle and its speedy adjustment, I am aware that the details ofthe structure can be greatly varied without departing frommy invent-ion.I, however, desire to claim the IOO O. specific details as well as thebx'oad features of the invention. The valve structure itself is adaptedto other uses than in connection with Bunsen burners, and I desire toclaim that structure broadly. It is obviously the main invention herepresented and is also desired to be claimed in connection with the partswhich make up a complete Bunsen burner.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

l. In a valve structure for Bunsen burners, the combination of thegas-supply pipe A; the burner-base B suitably secured thereto, andterminating in a needle-valve seat at 'its upper end; perforateddiaphragms c e within the same; a needle D supported in suitableguiding-perforations in the diaphragms or partitions e e, and providedwith a rack D upon one side; a laterally-arrangedinternally-screw-threaded tube or sleeve E" opening into the burner-basebetween the diaphragm's e; a thumb-screw E extending through the same,terminating at its inner end, in an elongated pinion E meshing with therack D on the needle D; a suitable mixing-tube above the needle-valve,for the purpose specified.

2. In a valve structure for Bunsen burners, the combination of thegas-supply pipe A; the burner-base B suitably secured thereto, andterminating in a needle-valve at its upper end; perforated diaphragms ee within the same; a needle D supported in suitable guiding-perforationsin the diaphragms or partitions e e, and provided with a rack D upon oneside; a laterally-arranged internally-screw-threaded tube or sleeve E"opening into the burner-base between the dia.- phragm's e; a thumb screwE extending through the same, terminating at its inner end, in anelongated pinion E' meshing with the rack D' on the, needle D, for thepurpose specified.

3. In a valve structure for Bunsen burners, the combination of theburner-base B termnating in a needle-valve seat at its upper end;perforated diaphragms e e within the same; a needle D supported insuitable guiding-perforations in the diaphragms or partitions e e, andprovided with a rack D' upon one side; a laterally-arranged internally-vscrew-threaded tube' or sleeve E opening into the burner-base betweenthe diaphragms e; a thumb-screw E extending through the same,terminating at its inner end, in an elongated pinion E meshing with therack D on the needle D, for the purpose specified.

4. lIn a valve structure for Bunsen burners, the combination of theburner-base hav` ing a gas-passage terminating in a needlevalve seat atits upper end; a'needle D suitably guided within the burner-base, andhaving a rack D formed in the side of the needle; a thumb-screw E havingits inner end formed into a pinion adapted to mesh with said rack D',and screw-threaded through the side of said base, for the purposespecified.

5. In a valve structure fora Bunsen burner, the combination of aburner-baseB terminating in a needle-valve seat at its upper end,perforated diaphragms e e within the same; a needle D supported insuitable guiding-perforations in the diaphragms or partitions e e andprovided with a rack D upon one side; a pinion engaging said rackbetween said diaphragms; and an operating-shaft forsaid pinion, for thepurpose specified.

In witness whereof I have hereunto set my hand and seal in the presenceof two witnesses.

ALFRED H. HUMPHREY. L. s]

Witnesses:

A. IRENE ADAMS, Oris A. EARL.

